Layer.adjustGamma

Function/Meaning

Gamma Correction

Type

Method of Layer class

Syntax

adjustGamma(rgamma=1.0, rfloor=0, rceil=255, ggamma=1.0, gfloor=0, gceil=255, bgamma=1.0, bfloor=0, bceil=255)

Arguments

rgamma	Specifies the gamma value for the red component ( 0.0 - 1.0 - 9.0 ).
rfloor	Specifies the minimum output value for the red component ( 0 - 255 ).
rceil	Specifies the maximum output value for the red component ( 0 - 255 ).
ggamma	Specifies the gamma value for the green component ( 0.0 - 1.0 - 9.0 ).
gfloor	Specifies the minimum output value for the green component ( 0 - 255 ).
gceil	Specifies the maximum output value for the green component ( 0 - 255 ).
bgamma	Specifies the gamma value for the blue component ( 0.0 - 1.0 - 9.0 ).
bfloor	Specifies the minimum output value for the blue component ( 0 - 255 ).
bceil	Specifies the maximum output value for the blue component ( 0 - 255 ).

Return Value

None (void)

Description

Performs gamma correction on the image.
Specifying 1.0 for the gamma value results in a linear gamma curve.
The minimum and maximum output values specify the floor and ceiling for the luminance of each component.
Setting the maximum value lower than the minimum value allows you to invert the image.
This method refers to the Layer.face property. If this is dfAddAlpha, the method uses a special gamma correction routine for additive alpha blending. This routine performs gamma correction on the component corresponding to alpha blending within the additive alpha blend, but does not perform gamma correction on the component corresponding to additive blending.